英德
有道
百度
谷歌
图片
维基
百科
勘探钻孔
pioneer well
- 本文根据岩溶区勘探钻孔和矿山巷道资料说明河谷深部溶洞分布的成层性。
This paper deals with the phenomenon of layering in the distribution of deep karsts according to the information from the prospecting boreholes and mining excavation in karst areas. - 通过对祁东煤矿勘探钻孔统计资料分析，研究了岩浆侵入煤层的主要特征。
Based on the statistics of exploratory boring data, the main characters are researched on magmatic intrusion in Qidong coalmine. - 高压水射流径向水平孔钻进技术是水平孔施工技术之一，它是在垂直瓦斯抽放或煤层气勘探钻孔布置机械或水力扩孔装置，对准选定的煤层部位进行扩孔。
As one of radial horizontal drilling techniques, high pressure water jet drilling technology is capable of using mechanical or water jet apparatus to make a cavity at the selected coal seam.
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